(1)  Unless evidence is provided to the contrary, plumbing work or a plumbing installation is taken to comply with this Act if it complies with the relevant performance requirements of the National Construction Code.

(2)  Unless evidence is provided to the contrary, plumbing work, or a plumbing installation, is taken to comply with the relevant performance requirements of the National Construction Code if –

(a) in relation to permit plumbing work –

(i) a plumbing permit is issued in respect of the plumbing work; and

(ii) a certificate of completion is issued in respect of the plumbing work; and

(b) in relation to notifiable plumbing work, a certificate of completion is issued in respect of the plumbing work.